Cabin Temperature Sensor / Switch: Testing and Inspection

1. Perform air flow test to check motor/fan assembly.
a. Turn ignition to the ON position and push the OFF button to stop the ATC system airflow. This will make it easier to observe paper in the step Step
b. Place a small piece of newspaper in front of the sensor/motor opening on the ATC control. If the paper sticks to the opening, the In-Car sensor/motor is operating properly. The piece of paper should be only large enough to cover the grille opening.
2. Check if the electrical connection and connector are OK.
3. Check for the two foam seals and their condition, it is absolutely necessary for proper sensor operation.
a. Seal on the inside surface directly behind the nameplate.
b. Seal (strip) located directly to the right of the right center duct opening (instrument panels with trim bezels).